chdir 't' if -d 't';
@INC = '../lib';
require './test.pl';
+ plan( tests => 78 );
}
-plan( tests => 9 );
-
my @c;
+print "# Tests with caller(0)\n";
+
@c = caller(0);
ok( (!@c), "caller(0) in main program" );
eval { @c = caller(0) };
-is( $c[3], "(eval)", "caller(0) - subroutine name in an eval {}" );
+is( $c[3], "(eval)", "subroutine name in an eval {}" );
+ok( !$c[4], "hasargs false in an eval {}" );
eval q{ @c = (Caller(0))[3] };
-is( $c[3], "(eval)", "caller(0) - subroutine name in an eval ''" );
+is( $c[3], "(eval)", "subroutine name in an eval ''" );
+ok( !$c[4], "hasargs false in an eval ''" );
sub { @c = caller(0) } -> ();
-is( $c[3], "main::__ANON__", "caller(0) - anonymous subroutine name" );
+is( $c[3], "main::__ANON__", "anonymous subroutine name" );
+ok( $c[4], "hasargs true with anon sub" );
# Bug 20020517.003, used to dump core
sub foo { @c = caller(0) }
my $fooref = delete $::{foo};
$fooref -> ();
-is( $c[3], "(unknown)", "caller(0) - unknown subroutine name" );
+is( $c[3], "(unknown)", "unknown subroutine name" );
+ok( $c[4], "hasargs true with unknown sub" );
+
+print "# Tests with caller(1)\n";
sub f { @c = caller(1) }
+sub callf { f(); }
+callf();
+is( $c[3], "main::callf", "subroutine name" );
+ok( $c[4], "hasargs true with callf()" );
+&callf;
+ok( !$c[4], "hasargs false with &callf" );
+
eval { f() };
-is( $c[3], "(eval)", "caller(1) - subroutine name in an eval {}" );
+is( $c[3], "(eval)", "subroutine name in an eval {}" );
+ok( !$c[4], "hasargs false in an eval {}" );
eval q{ f() };
-is( $c[3], "(eval)", "caller(1) - subroutine name in an eval ''" );
+is( $c[3], "(eval)", "subroutine name in an eval ''" );
+ok( !$c[4], "hasargs false in an eval ''" );
sub { f() } -> ();
-is( $c[3], "main::__ANON__", "caller(1) - anonymous subroutine name" );
+is( $c[3], "main::__ANON__", "anonymous subroutine name" );
+ok( $c[4], "hasargs true with anon sub" );
sub foo2 { f() }
my $fooref2 = delete $::{foo2};
$fooref2 -> ();
-is( $c[3], "(unknown)", "caller(1) - unknown subroutine name" );
+is( $c[3], "(unknown)", "unknown subroutine name" );
+ok( $c[4], "hasargs true with unknown sub" );
+
+# See if caller() returns the correct warning mask
+
+sub testwarn {
+ my $w = shift;
+ is( (caller(0))[9], $w, "warnings match caller");
+}
+
+# NB : extend the warning mask values below when new warnings are added
+{
+ no warnings;
+ BEGIN { is( ${^WARNING_BITS}, "\0" x 12, 'all bits off via "no warnings"' ) }
+ testwarn("\0" x 12);
+
+ use warnings;
+ BEGIN { is( ${^WARNING_BITS}, "UUUUUUUUUUU\025", 'default bits on via "use warnings"' ); }
+ BEGIN { testwarn("UUUUUUUUUUU\025", "#1"); }
+ # run-time :
+ # the warning mask has been extended by warnings::register
+ testwarn("UUUUUUUUUUUU");
+
+ use warnings::register;
+ BEGIN { is( ${^WARNING_BITS}, "UUUUUUUUUUUU", 'warning bits on via "use warnings::register"' ) }
+ testwarn("UUUUUUUUUUUU","#3");
+}
+
+
+# The next two cases test for a bug where caller ignored evals if
+# the DB::sub glob existed but &DB::sub did not (for example, if
+# $^P had been set but no debugger has been loaded). The tests
+# thus assume that there is no &DB::sub: if there is one, they
+# should both pass no matter whether or not this bug has been
+# fixed.
+
+my $debugger_test = q<
+ my @stackinfo = caller(0);
+ return scalar @stackinfo;
+>;
+
+sub pb { return (caller(0))[3] }
+
+my $i = eval $debugger_test;
+is( $i, 11, "do not skip over eval (and caller returns 10 elements)" );
+
+is( eval 'pb()', 'main::pb', "actually return the right function name" );
+
+my $saved_perldb = $^P;
+$^P = 16;
+$^P = $saved_perldb;
+
+$i = eval $debugger_test;
+is( $i, 11, 'do not skip over eval even if $^P had been on at some point' );
+is( eval 'pb()', 'main::pb', 'actually return the right function name even if $^P had been on at some point' );
+
+print "# caller can now return the compile time state of %^H\n";
+
+sub hint_exists {
+ my $key = shift;
+ my $level = shift;
+ my @results = caller($level||0);
+ exists $results[10]->{$key};
+}
+
+sub hint_fetch {
+ my $key = shift;
+ my $level = shift;
+ my @results = caller($level||0);
+ $results[10]->{$key};
+}
+
+$::testing_caller = 1;
+
+do './op/caller.pl';